Loom-shuttle.



' No. 714,676; Patented nec. 2, |902.

.1. coLnwr-:LL& c. G. mLnAnn.

LM SHUTTLE.

(Application med Sept. 20, 1901.)

(N0 Mndel.)

A `NITED STATES JOSEPH OOLDWELL AND CHRISTOPHER G. GILDAHRD, OF FALL RIVER, MASSACHUSETTS.

LOOM-SHUTTLE.

SPECIFICATION formingpart of Letters Patent No. 714,676, dated December 2, 1902.

Application led September 20, 1901. Serial No. 75,774. (No model.) -m n To a/ZZ whom it may concern:

Be it known that we, JOSEPH COLDWELL and CHRISTOPHER G. G1LDARD,citizens of the United States, residing at Fall River, in the county of Bristol and State of Massachusetts, have invented new and useful Improvements in Loom-Shuttles, of which the following is a specification.

. Our invention relates to that class of shuttles for looms termed hand-threading shuttles, whereinl the shuttle in its travel back and forth across the warps has its fillingthread automatically guided into the deliveryeye thereof.

The prime objects of our invention are to simplify and cheapen the shuttles of this charactor, to render them more positive in their threading operation, to preserve the contour of the conventional shuttle and avoid any projections orirregularities that would in any Way tend to engage the warp-threads, and also provide means for efficiently retaining the threading attachment against working loose.

Other objects and advantages of the invention will hereinafter appear andthe novel features thereof will be particularly pointed out in the claims.

Referring to the drawings, Figure l is a perspective View of a hand-threading shuttle embodying our invention in its preferred form. Fig. 2 is a central longitudinal sec` tional view of the same. Fig. 3 is a viewsimilar to Fig. 1 with the guidedisk removed.`

Fig. 4 is a view similar to Fig. 2, illustrating a modification. Fig. 5 is adetail view showing before assembling Athe components parts of our hand-threading attachment as employed in the construction shown in Figs. 1 and 2.' Fig. 6 is a longitudinal sectional view of another modified construction.

Similar letters of reference indicate similar parts throughout the drawings.

The shuttle-body A is of the conventional form and contains a filling @,from which leads the thread a. At the front end of the shuttlebeyond the filling-opening a2 the shuttlebody is bored vertically from opposite points, thus forming upper and lower cylindrical cavities a3 a4, respectively, the two cavities being connected by areduced bore or perforation a5.

The upper cavity a3 communicates with the filling-opening a2 of the shuttle by means of a narrow throat a6, the bottom of which declines, as shown, from the bottom of said upper cavity, so as not to interfere with the free travel of the thread. The remainder of the upper en d of the said upper cavity is surrounded by a depressed thread-race a7, the entrance to which is inclined as at as. From a point transversely opposite the upper end of the entrance as the thread-race beyond the entrance gradually declines and merges into an inclined guide-slot a, the saine being a mere kerf, the upper end of which is tangentially disposed with regard to the cavities a3 d4, and which slot is disposed at an angle of about forty-five degrees. Beyond this guideslot ai the thread-race ai is on the same horizontal plane as the said race at the upper end of the entrance as, so that immediately back of the guide-slot a9 there is produced an overlapping guide-iinger al", the inner corner of thethread-race leading to the said guide-slot being beveled away, as at au.

The lower end of the guide-slot a@ enters the rear side of a transverse delivery-eye com, that extends through the wall ofthe upper cavity a3, parallel to the said guide-slot, and therefore communicating therewith throughout the width of said slot. This delivery-eye may be provided with a bushing B, formed of metal or other material and having a longitudinal thread-entering slot b. The end of this bushing is of course given such shape or contour as to conform to the exterior configuration of the shuttle-body.

Seated in the upper cavity a3 and somewhat smaller in diameter than the same is a hollow cylindrical post O, the upper end of which is provided with a circular or disk-shaped thread-guiding head c, the diameter of which is very slightly less than that of the thread- `race which it occupies, so that between the perimeter of the thread-guiding disk and the wall of the thread-race anintervening narrow space occurs. The cavities a3 0.4 are slightly to one side of the shuttle-body, so

that the edge of the thread-guiding disk c roo v covers the upper end of the inclined threadl guide a, immediately above which the said disk is slightly depressed,`as at c', to conform to the exterior formation of the shuttle-body. If desired, the edge ofthe thread-guidin g disk may have a depending spur cwhich, engaging with an aperture (1,12, formed in the bottom of the thread-race of the shuttle-body, will immediately properly adj ust the said disk when applied to the said shuttle, such spur, of course, being located back of the guideslot 0.9, so as not to interfere with the introduction of the thread, as .will hereinafter appear.

For the purpose of elevating the thread.- 'guiding disk a suitable distance above the bottom of the thread-race recourse may be had to one or more thin washers c3, the same being of somewhat-greater diameter than the hollow cylindrical post C and fitting the upper cavity as, upon the bottom of which they rest. Immediately above its lower end the post C lnay be provided with an annular thread-groove c4.

In the constructions illustrated in Figs. l to 5, inclusive, the foregoing description for the most part equally applies, the differences being merely in the manner of securing the bolt or screw, hereinafter referred to, in position.

In the preferred form (see Figs. l, 2, 3, and 5) a bolt D is employed, the upper end or head of the same being countersunken in the guide disk and the lower end extending through the washers c3 and perforation a5 into the lower cavity a4. A coiled spring E en- 'circles the bolt, which latter is of less diameter than the hollow post and is compressed between the head of the bolt and the washers c3, thereby exerting an upward pressure upon the bolt.

Within the cavity 0,4 of the shuttle-body may be located simply an ordinary nut threaded on the lower end of the bolt, or the same may be provided with any form ot' nut-lock, it being essential that the parts be prevented from working loose, as will be readily appreciated. We prefer, however, to employin the llower cavity a4 a washer F, upon the upper face of which is formed one or more ribsf and the under side of which is provided with radial grooves f'. Below the washer we employ a ianged nut G, the upper face of which is provided with radial ribs g, corresponding in number and location with the grooves in the washers. Bytig'htening up the nut by an ordinary socket key-wrench the ribs fof the washer will be forced Vinto the fiber of the wood of the shuttle-body, and the ribs of the nut will, by reason of `the presence of the spring E, yieldingly engage with the grooves f of the washer, and thus the guide-disk is yieldingly held in its depressed position and the nut locked by one and the same spring. This completes the' construction, with the exception of the deflecting staple a, that spans the lower end of the guide-slots a9 of the shuttle and that of the bushing in the' deliveryeye.

In operation as. the thread is held the shuttle moving in its course is guided into the thread-race by the thread-guiding disk c, and upon the reverse movement of the shuttle the thread is conducted about the guiding-disk until it reaches the point a7, by which and the incline au it is caused to descend the inclined slot a9, at the bottom of which, by the staple a, it is deflected into the delivery-eye, the entire operation being continuous, immediate, and positive and resulting simply from the movement of the shuttle while the thread is held, or the shuttle may be held stationary and threaded by hand.

In the construction illustrated in Fig. 4 the operation is the same. The construction, however, slightly differs. In this arrangement the bottom cavity is omitted and only the upper cavity a3 employed. The hollow post C is seated, as before, in the cavity a3 and' rests upon the washers c3. In lieu of the bolt D we employ an ordinary screw J, which is forced upward by the expanding action of the coiled spring E, whereby the threads of the screw are drawn up against the fiber in the wood of the shuttle-body and the screw therefore placed under a tension that prevents it from accidentally turning when once set.

In Fig. 6 the spring is entirely omitted and an ordinary nut employed within the lower cavity a4 upon the lower end of a bolt H. In this instance the lower end of the hollow post I may rest upon a series of washers c", which suciently elevates the thread-guide disk h above the th read-race of the shuttle-body, said thread-race and guide-disk being the same as heretofore described. The bolt H may be reduced at an intermediate point, thus producing an annular shoulder h2, and the hollow IDO post is similarly proportioned and shaped, so

as to conform to the bolt, as plainly shown. For the reasons stated, however, we prefer to employ the spring and other accessories incidental to the locking-nut, though, as will be obvious, any other form of nut-lock may be substituted. The spring, as herein employed in Figs. l, 2, and 5, however, it will be observed, performs adouble function-namely, it tends to draw the bolt upward, so that its threads impinge at their upper faces against the engaging threads of the nut and shuttlebody, and also to yieldingly engage the ribs of the nut with the corresponding grooves of the nut engaging and locking washer.

Having described our invention, what we claim is- 1. A shuttle having beyond its opening a cavity; a surrounding thread-race a communicating throat; a lateral eye; and an inclined slot leading from said thread-race to said eye; combined with a hollow post seated in the cavity, and provided at its upper end with a guide-disk supported above the thread-race;

IIO

a bolt located in the hollow post; and a coiled spring encircling the bolt and compressed between the head of the same and the bottom of the cavity.

2. A shuttle having beyond its opening a cavity; a surrounding thread-race; a communicating throat; a lateral eye; and an inclined erting au upward tendency of the same; a

toothed washer arranged on the lower end of bolt and provided on its under side with grooves; and a nut on the bolt below the washer and provided with ribs for engaging yieldingly with the grooves thereof.

4. A shuttle provided beyond its fillingopeningin its upper side with a cavity; a communicating throat; a surrounding threadrace; a lateral thread-discharging eye; and an inclined slot leading from the race to the eye; combined with a hollow post seated in the bottom and of less diameter than the cavity and terminating at its upper end in an enlarged or flared thread-guiding disk supported above and conforming to the threadrace; a fastening-bolt seated in the post and the shuttle; and a coiled spring encircling the bolt within the post and compressed between the head of the bolt and the bottom of the cavity.

5. A shuttle provided beyond itsdllingopening with upper and lower alining and communicating cavities; a throat leading to the upper cavity; a surroundingthread-guide; a lateral thread-discharging eye; and an inclined guide-slot leading from the thread-race to the eye; combined with a hollow post seated in said upper cavity; aguide-disk supported above the race by said post; a bolt passed through the post and depending into said lower cavity; a washer grooved on its under side and ribbed on its upper side and located on the bolt within the lower cavity; a nut ribbed on its upper side to engage the grooves of the washer and also located in the lower cavity; and a spring for normally elevating the bolt, Washer and nut.

6. A shuttle provided beyond its iillingopening with upper and lower alining cavities; a throat leading to the upper cavity; a surrounding thread-guide; a lateral threaddischarging eye; and an inclined guide-slot leading from the thread-race to the eye; combined with a hollow post seated in said upper cavity; a guide-disk supported above the race by said post; a bolt passed through the post and depending into said lower cavity, a washer grooved on its under side and ribbed on its upper side and located on the bolt within the lower cavity; a nut ribbed on its upper side to engage the grooves of the washer and also located in the lower cavity; and a coiled spring encircling said bolt and compressed between the head thereof and bottom of the upper cavity and inclosed bythe hollow post.

7. A shuttle provided beyond its iillingopening with a cavity, as; a communicating throat, d6; asurrounding thread-race, a7, cut away as at a8 and d, and provided with a iinger or horn, d10; the eye, Q12; provided with the slotted bushing Q13; the guide-slot, d, leading from the race to the eye; combined with the hollow post seated in the cavity and the guide-disk, c, conforming to and supported above the cavity; and a fastening device passing through said hollow post.

8. A shuttle provided beyond the fillingopening with a cavity, a3; a communicating throat, a6; a surrounding thread-race, al, cut away as at as and all and provided with the finger orhorn, d10; the eye, als; provided with the slotted bushing, B; the guide-slot, a9, leading` from the race to the eye; combined with the hollow post seated in the cavity and the guide-disk, c, conforming to and support- 'ed above the cavity; the detlecting staple,

am, straddling the inclined slot; and a fastening device passing through said hollow ost. p 9. A shuttle provided beyond its fillingopening with a cavity; a throat leading from the iilling-opening to thecavity; a dischargeeye communicating with the cavity and a slot leading from the upper side of the shuttle to the discharge-eye combined with a U-shaped deliecting staple straddling the slot at its point of communication with the dischargeeye; a post secured in the cavity; and a guide-disk supported by the post and adapted at its perimeter to guide thread to said inclined slot.

l0. A shuttle provided beyond its illingopening with a cavity, a communicating throat, a lateral discharge-eye communicating with the cavity, and an inclined slot leading from the upper side of the said cavity to the said lateral discharge-eye, combined with a thread-guide supported in the cavity, alongitudinally-slotted bushing seated in the discharge-eye, and a U-shaped staple located at one side of the said lateral discharge-eye and extending over in line with the eye opposite the slot in the bushing, whereby the thread is prevented from leaving the eye laterally.

In testimony whereof we affix our signatures in presence of two witnesses.

JOSEPH COLDWELL. CHRISTOPHER G. GILDARD.

Witnesses:

ADoLPHUs T. CASTELLANA, PASQUALE RICCI. 

